run in the sun when young or stay thin get sun when young to avoid MS?

Original article:;Neurology;Source Reference:;Hejgaard L. et al “Association between age at onset of multiple sclerosis and vitamin D level–related factors”;Neurology;2015; 86:1-6. Mescape Today article:;http://www.medpagetoday.com/Neurology/MultipleSclerosis/53957?xid=nlmptDHE2015-10-08;eun=g848991d0r